We consider some features of the application of linear and matrix emission detectors in on-board air- and space-based hyperspectrometers (AVIRIS of the first and second generations, APEX, HYDICE, RESURS-P and others) for the spectrometric study of the Earth’s surface, for spectrometric data subsatellite validation and also in compact devices for the exploration of the Moon’s and Mars’ surfaces (M3, CRISM)